Discipline: Veterinary Medicine
Fourteen dairy cows were treated with ovine follicle stimulating hormone to induce superovulation. Seven of the 14 donor cows responded to the superovulation treatment with an average of 8.4 palpable corpora lutea n both ovaries. Twenty-nine embryos (19 normal and 10 degenerated) were recovered non-surgically, seven days after the onset of estrus. Nine fresh normal embryos were transferred to nine heifer recipients, resulting in four pregnancies. Nine normal embryos were cryopreserved by vitrification while one was lost during the vitrification process. One out of two vitrified embryos produced pregnancy when transferred to two recipients. The remaining vitrified embryos are being kept in the liquid nitrogen tank for future use.